Astro Self-study

Which planet is closest to the sun in our solar system?

• Mars

• Jupiter

• Venus

• Mercury

What is the current model of the solar system known as?

• Heliocentric model

• Redshift theory

• Geocentric model

• Steady state theory

What is the force that draws objects towards celestial bodies like the sun?

• Inertia

• Gravity

• Friction

• Magnetism

What is the life cycle of a star after it becomes a main sequence star?

• Red giant

• Supernova

• Neutron star

• White dwarf

What is used to show that the universe is expanding?

• Blueshift

• Yellowshift

• Whiteshift

• Redshift

What is the big bang theory used to explain?

• Beginning of the universe

• Creation of stars

• Formation of galaxies

• Expansion of the solar system

What is the force that traps all the planets in orbit around the sun?

• Electromagnetic force

• Centrifugal force

• Nuclear force

• Gravitational force

What is the name of the big cloud of dust and gas from which stars begin their life cycle?

• Comet

• Meteoroid

• Asteroid

• Nebula

What is the natural satellite that orbits around Earth?

• Mars

• Moon

• Jupiter

• Venus

What is the gravitational field of the moon?

• 2 newtons per kilogram

• 10 newtons per kilogram

• 5 newtons per kilogram

• 15 newtons per kilogram